To all who insist that Congress may sustain Slavery in the national capital I put the question, Where in the Constitution is the power found? If you cannot show where, do not assert the power. So hideous an effrontery must be authorized in unmistakable words. But where are the words? In what article, clause, or line? They cannot be found. I challenge their production. Insult not human nature by pretending that its most cherished rights can be sacrificed without solemn authority. Remember that every presumption and every leaning must be in favor of Freedom and against Slavery. Remember, too, that no nice interpretation, no strained construction, no fancied deduction, can suffice to sanction the enslavement of our fellow-men. And do not degrade the Constitution by foisting upon its blameless text the idea of property in man. It is not there; and if you think you see it there, it is simply because you make the Constitution a reflection of yourself. A single illustration will show the absurdity of this pretension. If, under the clause giving to Congress “exclusive legislation” at the national capital, Slavery may be established, and under these words Congress is empowered to create slaves instead of citizens, then, under the same words, it may do the same thing in the “forts, magazines, arsenals, dock-yards, and other needful buildings” belonging to the United States, wherever situated, for these are all placed within the same “exclusive legislation.” The extensive navy-yard at Charlestown, in the very shadow of Bunker Hill, may be filled with slaves, with enforced toil to take the place of that cheerful, well-paid labor whose busy hum is the best music of the place. Such an act, however consistent with slaveholding tyranny, would not be regarded as constitutional at Bunker Hill. If there were any doubt on this point, and the absence of all authority were not perfectly clear, the prohibitions of the Constitution would settle the question. It is true that Congress has “exclusive legislation” within the District; but the prohibitions to grant titles of nobility, to pass _ex post facto_ laws, to pass bills of attainder, and to establish religion, are unquestionable limitations of this power. There is also another limitation, equally unquestionable. It is found in an Amendment proposed by the First Congress, on the recommendation of several States, as follows:-- “No PERSON shall be deprived of life, LIBERTY, or property, without _due process of law_.”